Many years back a fellow at my field decided he was too impatient to let the rotor slow down on his heli. With TX in his left hand, he reached over and went to touch the center of the rotor. Before he got all the way, the left thumb slipped and the heli flew right up into his hand, damn near cutting his thumb clean off. Amazing, he drove himself to the hospital and all is fine again. I bet its a bit stiff though.

Another friend had a P-40 Warhawk ARF outfitted with an OS .70 4-stroke. The plane was sitting a tail restraint device and he ran it up with an electric starter. The engine somehow started backwards and jumped back a few feet even though it was a 4 stroke. He jumped for it, at which time the motor righted itself and lopped his thumb off when it surged forward. He had it reattached and still flies today at an age of 81 ( and damn good for his age too... )

Kelly